It's not a bad article to start off with.

My advice is:

1. Don't waste audience attention with things people already know. Assume your audience knows the basics of what April Fools Day is and work that into the text, or be self-conscious about it. (i.e. for those that don't know)

2. When you transitioned in one paragraph from the US tradition to the French tradition, there wasn't a proper thru-line to take us back to the US Tradition

3. I would go more into the veracity of the theories (how reliable they are) and if there's anything we can say for certain about the holiday. I have no doubt that it was documented in media somewhere.

4. I applaud you for a relatively strong conclusion and a relatively strong introduction. Too many Medium writers state what they want to write about.

5. I would still tie the history of the holiday, in your conclusion. Maybe something like, "If you are the victim of a prank, take pride in the fact that you are upholding a tradition that dates back 600 years"

Anyway, this is my form to show interest:

https://docs.google.com/forms/d/1-DNR1wy4liHExCbBeS02DU9qGGlqI1flb6cvRFBaA1M/edit

This is some free advice:

https://orrinkonheim.medium.com/announcing-a-new-course-on-how-to-get-published-5a5b2663da36